Tie-plate.



No 673,033. Patented Apr. 30, l90l.

I D. SERVIS.

TIE PLATE.

(Application filed Sept. 6, 1900.;

(No Model.)

INVENTOR 7% ATTORNEY UNITED STATES PATENT 0mm.

' DAVID SERVIS, OF NEW YORK, N. Y.

TIE-PLATE.

SPECIFICATION formingpart of Letters Patent No. 673,033, dated April 30.1901.

. Application filed September '6, 1900. Serial No. 29,137. No model.

Tn ml], whom it may concern:

Be it known that I, DAVID SERvIs, acitizen of the United States,residing at 100 Convent avenue, borough of Manhattan, city, county,

and State of New York, have invented a new tie is effected andmaintained. The greatest benefit which may be derived from the use of atie-plate is obtained by making the plate as nearly as possible anintegral part of the tiethat is, the tie-plate must have such a firm,uniform, and intimate adhesion or union with the tie that movement orbuckling is precluded. A plate with a loose bearing on account of themovement which is permissible under the vibration due to the trafficpassing over the rails works itself loose and cuts into and destroys thetie, while the plate, instead of being a benefit, becomes a detriment byinterfering with the firm holding and binding together of the spikesthat secure the rail to the tie. Attempts have been made to remedy theseevils in former. constructions by increasing the depth of the flangesand making the body of the plate thicker and of larger area. Thesechanges, however, create objections additional to those sought to beremedied. Flanges that are embedded in the tie parallel with the grainof the wood when too deep split the tie, leaving openings in the woodex-' tending a considerable distance beyond the ends of the flanges. Aplate too thick tends to the loss of the benefits of the elasticproperties of the tie and transmits objectionable jar and shock to therolling-stock. Besides this the increase in area and thickness of plateand depth of flanges increase the cost of the manufactured product. Itwill therefore be seen that the lighter a tie-plate can be made and yetretain sufficientstrength to perform its duties and the more intimatethe adhesion of the tie-plate to the tie the more efficient anddesirable the device will be in all its operations.

The object of the present invention, therefore, is to produce atie-plate which shall have the desirable qualities hereinbefore referredto-namely, that it shall be of light construction, so to realize thefull elastic properties of the tie; that the means whereby it is securedto the tie shall be such as to as nearly as possible approach thedesideratum of making a tie-plate act almost as an integral portion ofthe tie, and that the means whereby the tie-plate is secured to the tieshall be such, while obtaining the desired results, as not to destroy orundesirably mutilate the tie.

In the drawings I have illustrated a construction which illustrates apreferred form of my invention.

In said drawings, Figure 1 is a perspective view of the tie-plate, whileFig. 2 is a View in perspective, showing the tie-plate in position onatie associated with a section of a rail.

Referring to said drawings in detail, like letters of reference refer tolike parts.

A designates the tie-plate, B the main side flanges, and O thesecuring-flanges, which are located on the under side of the tie-plateand extend throughout its entire length. In the construction shown thereare two of these securing-flanges shown, and each flange has upon eachside and projecting downwardly from the face of the tie-plate alongitudinal rib 0, running parallel with itself. One of thelongitudinalflanges. O, with its corre- 'sponding rib c on each side,forms a securing unitthat'is, the three membersnamely, the centrallongitudinal flange and the rib on each sideconstitute a unitary meansfor securing the union of the tie-plate with the tie.-

The ribs 0 are provided with faces 6, beveled toward the flange C. Thisis for the purpose of directing and compressing the timber of the tie upinto the space between the ribs and the flange, so as to attain awedging action to insure the desired union and intimate adhesion of thetie-plate to the tie. Each of the 'main flanges B is flared outwardlyand provided with a cutting edge band an inwardlydirected bevel b on itslower side. These side flanges also act to inclose the timber of the tieand direct the same up into the recesses D, so that when the tie-plateis in position the timber of the tie is crowded up in said recesses, sothat there is no danger of the tie-plate becoming dislodged undervibration due to operation and use.

It will be noted that the peculiar contour of the grooves or recesses Dis such as to allow the ribs and flanges to gradually force the fibersof the tie up in the recesses, so that the fibers of the wood will beforced up tightly against the shoulders or thickest part of the flangesand the under surface of the plate. The outer flanges of the tie-plateare made longer than the others for the purpose of obtaining the deeperanchorage.

What is claimed as new is l. A tie-plate provided with side flangesflaring outwardly from the surface of the plate, and a longitudinal riblocated in juxtaposition to said flanges on the under surface of thetie-plate, and provided with a face oppositely inclined to said sideflanges, whereby there is secured a flaring-mouthed recess DAVID SERVIS.

Witnesses:

IDA M. SHELLEY, WM. B. DAVIS.

